CDA270 (Yellow Brass, 65%)
CDA270 Yellow Brass is a 65% copper brass alloy known for excellent cold working capacity and good joining properties. It is commonly used for wire, tube, rod, fasteners, plumbing fittings, hardware, and formed brass components.
- Description
- Product Specifications
Description
CDA270 Yellow Brass is a copper-zinc alloy with a nominal composition of 65% copper and 35% zinc. It is listed as US EPA registered antimicrobial in the supplied data sheet and is suited to applications that require drawing, bending, forming, stamping, and general fabrication.
This alloy offers excellent soldering and brazing suitability, good oxyacetylene welding and butt welding performance, and strong cold working capacity. It is commonly used across architectural, automotive, builders hardware, electrical, fastener, industrial, marine, and plumbing applications.
Key Features:
- 65% yellow brass alloy
- US EPA-registered antimicrobial
- Excellent cold working capacity
- Excellent soldering and brazing suitability
- Good oxyacetylene welding and butt welding suitability
- Good spot welding suitability
- Poor hot forming capacity
- Commonly used for wire, tube, rod, fasteners, fittings, hardware, and formed components
| Element | Composition | Nominal |
|---|---|---|
| Copper (Cu) | 63.0-68.5% | 65.0% |
| Iron (Fe) | 0.07% max | – |
| Lead (Pb) | 0.09% max | – |
| Zinc (Zn) | Remainder | 35.0% |
| Cu + Named Elements | 99.7% min | – |
| Form | Temper | Section Size | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|---|---|
| Wire | OS035 | 2.0 mm | 345 MPa | – | 60% |
| Flat Products | H02 | 1 mm | 421 MPa | 345 MPa | 23% |
| Flat Products | OS015 | 1 mm | 365 MPa | 152 MPa | 54% |
| Flat Products | H06 | 1 mm | 586 MPa | 427 MPa | 5% |
| Rod | H00 | 25.4 mm | 379 MPa | 276 MPa | 48% |
| Rod | OS050 | 25.4 mm | 331 MPa | 110 MPa | 65% |
| Wire | H02 | 2.0 mm | 607 MPa | – | 15% |
| Wire | H04 | 2.0 mm | 758 MPa | – | 8% |
| Melting Point – Liquidus | 932°C |
|---|---|
| Melting Point – Solidus | 904°C |
| Density | 8.47 g/cm³ at 20°C |
| Specific Gravity | 8.47 |
| Electrical Resistivity | 6.38 microhm-cm at 20°C |
| Electrical Conductivity | 0.158 MegaSiemens/cm at 20°C |
| Thermal Conductivity | 116.0 W/m.K at 20°C |
| Coefficient of Thermal Expansion | 20.3 x 10⁻⁶ per °C, 20-300°C |
| Specific Heat Capacity | 377.1 J/kg.K at 293 K |
| Modulus of Elasticity | 103400 MPa |
| Modulus of Rigidity | 38610 MPa |
| Soldering | Excellent |
|---|---|
| Brazing | Excellent |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Fair |
| Spot Weld | Good |
| Butt Weld | Good |
| Cold Working | Excellent |
| Hot Forming | Poor |
| Machinability Rating | 30 |
| Common Forms | Bolts, nuts, rod, screws, studs, tube, welded tube, wire, and tinned wire |
